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Related Experiment Video

Updated: Mar 3, 2026

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The conventional tuning fork as a quantitative tool for vibration threshold.

Mohammed H Alanazy1, Nuha A Alfurayh1, Shaza N Almweisheer1

  • 1Department of Internal Medicine, Division of Neurology, King Saud University Medical City and College of Medicine, King Saud University, PO Box 7805, Riyadh, 11472, Saudi Arabia.

Muscle & Nerve
|May 4, 2017
PubMed
Summary

Conventional tuning forks (CTF) offer reliable quantitative vibration measurements comparable to Rydel-Seiffer tuning forks (RSTF). This study provides age-stratified reference values for both, aiding clinical assessment of vibration sensation.

Keywords:
Rydel-Seiffer tuning forkconventional tuning forkquantile regressionreference valuestuning forkvibration threshold

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Area of Science:

  • Neurology
  • Biomedical Engineering
  • Clinical Measurement

Background:

  • Vibration quantification is crucial for assessing peripheral neuropathy.
  • Conventional tuning forks (CTF) and Rydel-Seiffer tuning forks (RSTF) are used to measure vibration sensation.
  • Standardized reference values are needed for accurate interpretation of vibration thresholds.

Purpose of the Study:

  • To describe a method for quantifying vibration using CTF versus RSTF.
  • To compare the quantitative accuracy of CTF and RSTF.
  • To establish age-stratified reference values for vibration thresholds.

Main Methods:

  • Vibration thresholds were measured at the index finger and big toe in 281 participants.
  • Spearman's correlations assessed the relationship between CTF and RSTF measurements.
  • Quantile regression determined fifth percentile reference values, with age, weight, and height analyzed as covariates.

Main Results:

  • Strong correlations were found between CTF and RSTF values at both finger (0.59) and toe (0.64) (P < 0.001).
  • Age was the only significant covariate affecting vibration threshold.
  • Reference values for CTF and RSTF were provided for different age groups (20-39 and 40-60 years).

Conclusions:

  • CTF provides quantitative vibration data comparable in accuracy to RSTF.
  • Age-stratified reference data for vibration thresholds using CTF and RSTF are now available.
  • These findings support the use of CTF for quantitative vibration assessment in clinical practice.